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United States Patent | 5,555,184 |
Jaskowiak ,   et al. | September 10, 1996 |
A roller assembly for use in an electrostatographic development apparatus to transport developer material through a development zone. The roller assembly includes end cap sections for mounting rotatably to a housing of the development apparatus, and a spincasted sleeve section interconnecting the end cap sections. The spincasted sleeve section includes an outer layer that has a series of non-radial undercuts formed thereinto for retaining developer material being transported. In order to achieve consistent precision at relatively lower costs, the sleeve section is produced by spincasting a desired quantity of filled thermoset material in a simple reusable silicone mold formed and held in a mud frame.
Inventors: | Jaskowiak; Timothy R. (Webster, NY); Hart; Steven C. (Webster, NY) |
Assignee: | Xerox Corporation (Stamford, CT) |
Appl. No.: | 297281 |
Filed: | August 29, 1994 |
Current U.S. Class: | 399/286; 492/30 |
Intern'l Class: | G03G 015/08 |
Field of Search: | 355/259,251,253,245 118/656-658 492/18,28,30-37 428/36.9 |
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Suresh P. Makhijani, "Text Magnetic Brush Roll", Xerox Disclosure Journal, vol. 4, No. 3, May/Jun. 1979, p. 303. R. E. Hewitt, "Etched Developer Roll", Xerox Disclosure Journal, vol. 4, No. 4, Jul./Aug. 1979, p. 447. |